Comment No they aren't (Score 1) 147
Most links on slashdot are underlined to me.
Poke around with a mouse sometime over many of the two lines of text above each post... many things are clickable, and are not underlined until you hover over them.
In IOS the indicator that something could be interacted with was meant to be similar to an underline, in that buttons took on the tint color for the app - so when you saw that color you would know you could press.
I personally prefer outlines either, but it's not Ive's fault if some designers did not follow those guidelines in UI designs with textual buttons.